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Cold Rolled/Drawn Production Line

Cold rolled mill

There are 10 cold rolling production lines with an annual production capacity of 30,000 tons, including one 280, one 150, one 110, one 90, three 60, and three 30 units;

Product specification: outer diameter Φ20~273mm, wall thickness 1.0~32mm.

          

Cold drawing mill

8 sets of 10-200 ton hydraulic and chain cold drawing machines;

Product specifications: outer diameter Φ20~273mm, wall thickness 1.0~26mm, length ≤25000mm;

The product has a wide range of sizes and flexible specifications; the outer diameter has high precision and can be produced in small batches;

        

Pickling and degreasing equipment

The acid degreasing system in extrusion and cold rolling workshops includes 3 sulfuric acid pickling tanks, 3 mixed acid pickling tanks, 2 degreasing tanks, 2 hot water tanks, 4 clean water tanks, 1 whitening tank, and 1 passivation tank , 1 neutralization tank;

The single-tank pickling and single-tank degreasing capacity is 4t/h;

It is equipped with a waste acid recovery system, an acid-containing wastewater treatment system, and an acid mist treatment system.

Annealing furnace

The oxygen-free annealing furnace adopts the method of electric heating and pre-evacuating protective atmosphere isothermal spheroidizing annealing furnace to realize the non-oxidative annealing of the workpiece through the method of preheating the vacuum nitrogen protection before and after. The equipment has the characteristics of low atmosphere consumption, low energy consumption, clean subsequent processing, and fast and uniform heating speed, which greatly shortens the annealing process time, makes the workpiece oxidized and decarburized after annealing, and the depth of the depleted carbon layer is less than 0.05mm.